Hydraulically Powered Repetitive Impact Hammer,申请号CA19902068868-传众专利搜索

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发明名称	Hydraulically Powered Repetitive Impact Hammer
摘要
申请公布号	CA2068868(A1)	申请公布日期	1991.06.29
申请号	CA19902068868	申请日期	1990.12.20
申请人	ESCO CORPORATION	发明人	OTTESTAD, JACK B.
分类号	B25D9/12;B25D9/14;B25D17/24;(IPC1-7):B25D9/14	主分类号	B25D9/12
代理机构		代理人
主权项
地址

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